Genuine OEM Volkswagen Coolant Pipe, part number 7P0121070AA. This pipe directs the flow of coolant within the engine to maintain the correct operating temperature. It is located at position 5 in the diagram. The part has dimensions of 0.38m x 0.135m x 0.14m and weighs 0.305 kg. Genuine OEM coolant pipes ensure exact fitment and material integrity, crucial for preventing leaks and maintaining optimal engine temperature.